<template>
  <div>
    <button @click="showThis">查看this</button>
    <Header />
    <p v-red>计数器{{count|addEnd}}</p>
  </div>
</template>

<script>
export default {
  name: "App",
  data() {
    return {
      count: 0,
    };
  },
  methods: {
    showThis() {
      console.log(this);
      console.log(this.a);
    },
  },
};
</script>

<style>
</style>